What is the answer to 1+5|8+4x|=21 ?

The answer to 1+5|8+4x|=21 is x=-3\lor x=-1

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1+5|8+4x|=21

1 + 5 ∣ 8 + 4 x ∣ = 21

x = - 3 or x = - 1

Solution steps

1 + 5 ∣ 8 + 4 x ∣ = 21

Move

1

to the right side

5 ∣ 8 + 4 x ∣ = 20

Divide both sides by

5

∣ 8 + 4 x ∣ = 4

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

8 + 4 x = - 4 or 8 + 4 x = 4

8 + 4 x = - 4 or 8 + 4 x = 4

x = - 3 or x = - 1

30 = ∣ y - 60 ∣

- 10 ∣ 6 n - 2 ∣ = - 80

∣ 3 x ∣ = - 6

2 ∣ - x - 7 ∣ - 10 = - 9

∣ x - 1 ∣ = - 1

What is the answer to 1+5|8+4x|=21 ?
The answer to 1+5|8+4x|=21 is x=-3\lor x=-1
Solve for x: 1+5|8+4x|=21
The solution is x=-3\lor x=-1